Add tests for YAML-defined snapshots.

tests/functional/snapshots/fixtures.py

@@ -291,6 +291,20 @@
 {% endsnapshot %}
 """
 
+snapshots_pg__snapshot_yml = """
+version: 2
+
+snapshots:
+  - name: snapshot_actual
+    relation: "ref('seed')"
+    config:
+      unique_key: "id || '-' || first_name"
+      strategy: timestamp
+      updated_at: updated_at
+      meta:
+        owner: 'a_owner'
+"""
+
 snapshots_pg__snapshot_no_target_schema_sql = """
 {% snapshot snapshot_actual %}
 

tests/functional/snapshots/test_basic_snapshot.py

@@ -20,6 +20,7 @@
     seeds__seed_newcol_csv,
     snapshots_pg__snapshot_no_target_schema_sql,
     snapshots_pg__snapshot_sql,
+    snapshots_pg__snapshot_yml,
     snapshots_pg_custom__snapshot_sql,
     snapshots_pg_custom_namespaced__snapshot_sql,
 )
@@ -372,3 +373,24 @@ def test_updated_at_snapshot(self, project):
 class TestRefUpdatedAtCheckCols(UpdatedAtCheckCols):
     def test_updated_at_ref(self, project):
         ref_setup(project, num_snapshot_models=2)
+
+
+class BasicYaml(Basic):
+    @pytest.fixture(scope="class")
+    def snapshots(self):
+        """Overrides the same function in Basic to use the YAML method of
+        defining a snapshot."""
+        return {"snapshot.yml": snapshots_pg__snapshot_yml}
+
+    @pytest.fixture(scope="class")
+    def models(self):
+        """Overrides the same function in Basic to use a modified version of
+        schema.yml without snapshot config."""
+        return {
+            "ref_snapshot.sql": models__ref_snapshot_sql,
+        }
+
+
+class TestBasicSnapshotYaml(BasicYaml):
+    def test_basic_snapshot_yaml(self, project):
+        snapshot_setup(project, num_snapshot_models=1)